- INSTRUCTIONS -
The NDR Lamp Memory and External Control System is designed for communication between a central master
station and remote intercom stations. In addition to communication to remote locations, an external device can
be activated, such as activating a CCTV camera when the associated sub station is selected, or selectively
controlling the corresponding door strike or maglock. All other features, functions, and components are the same
as the standard NEM system.
WIRING DIAGRAM: SYSTEM USED FOR CCTV CAMERA CALL-UP
NDR
NDR Lamp Memory Master Station with External Control Capability
NDR-10 NDR-20 NDR-30 NDR-40
NDR-10A NDR-20A NDR-30A NDR-40A
Individual Components for System:
NDR-n Master station with selective contact output capability (10, 20, 30, 40)
NDR-nA Master station w/handset and selective contact output capability (10, 20, 30, 40)
ND-20AS 20-call Add-on Selector with selective output capability
ND-40AS 40-call Add-on Selector with selective output capability
RY-PA Relay for selective output (1 per station requiring external contact)
PS-2410A 24V DC, 1A Power Supply for 10-20 station systems
PS-24E 24V DC, 2A Power Supply for 30-40 station systems
N-series Any model sub station with NA- or NE- prefix
IMPORTANT:
1. RY-PA must be used for each additional contact
to isolate AC voltage from the intercom circuit.
2. Extra contact connections and L are on separate
terminal block. NDR-30/40 have two terminal blocks.
Special
Order
Products
1
2
3
~
20
E
H
+
-
NDR-20A
+
-
PS-2410A
NE-NVP
Red
Blk
Grn
Grn
Leave green
jumper intact
Red
Blk
Grn
NA-NE
1
2
3
~
20 L
1
2
Blk
Wht
NE-DA
RY-PA
#1
RY-PA
#2
RY-PA
#3
BLK
BLK
BLK
YEL
YEL
YEL
External
Terminal Block
Normally Open contacts remain
closed as long as master has sub
station selected.
Closure for Station #1
Closure for Station #2
Closure for Station #3
Pg. 1
1
L
2
RY-PA
#1
BLK
H
+
-
RY-PA
#2
NEM Master
RY-PA
#1
RY-PA
#2
BLK
BLK
BLK
YEL
Momentary closure #1
YEL
Constant closure #1
YEL
Momentary
closure #2
YEL
Constant
closure #2
Equipment for each station that requires
both a constant closure and momentary
closure when a channel is selected:
2 RY-PA relays
1 Diode (1N4001)
DUAL FUNCTIONS FROM EACH CHANNEL:
Terminal Block
NDR TERMINAL DEFINITIONS:
+ Positive 24V DC
- Negative
1~40 Station number
E Common communication
H Positive output for constant closure
L Positive output for selective closure
x x
Pg. 2
NDR Instr.
1198jd
Toll Free Technical Support
Phone: 1-800-692-0200
FAX: 1-800-832-3765
WIRING DIAGRAM: SYSTEM USED FOR SELECTIVE DOOR RELEASE
1
2
3
~
20
E
H
+
-
NDR-20A
+
-
PS-2410A
NE-JA
1
2
3
4
1
2
3
4
NE-JA
1
2
3
~
20 L
1
2
Blk
Wht
NE-DA
RY-PA
#1
RY-PA
#2
RY-PA
#3
BLK
BLK
BLK
YEL
YEL
YEL
External
Terminal Block
Normally Open contacts
are maintained when the
door release button is
being pressed while a
station button is selected.
Closure for Station #1
Closure for Station #2
Closure for Station #3
Aiphone Communication Systems
1700 130th Ave. N.E.
Bellevue, WA 98005
(425) 455-0510
FAX (425) 455-0071
OPERATION:
* POWER SWITCH MUST BE ON FOR SYSTEM TO BE OPERABLE.
1. When a station calls in, press the selector button corresponding to the lit LED.
2. To speak to the person at the remote station, press the TALK button or pick up the handset. Release TALK
button to hear reply. Communication via the handset is VOX (voice actuated).
3. If the extra contacts are used as shown in the "camera call-up" diagram, activating a device that is to remain
on for the duration of the call, the station's relay will stay activated as long as the selector button is depressed.
4. If the extra contacts are used as shown in the "selective door release" diagram, press the "door release" button
while the selector button is depressed. This will activate the corresponding relay as long as the button is being
pressed, which will activate the door release mechanism.
5. When the conversation is completed, press the OFF button to the left of the station selector button.
Hang up handset.
SPECIFICATIONS
Power Source: 24V DC at master. Use PS-2410A (NDR-10, 20) or PS-24E (NDR-30, 40).
Commun. Output: 500mW at 20 ohms
Communication: Push-to-talk, release-to-listen (TALK button) or VOX handset at master.
Hands free at sub station.
Calling: Master to sub: By voice only after pretone.
Sub to master: Call button on sub activates tone and LED at master,
remaining active until answered.
Wiring: 2 conductors homerun to sub station, or loop multi-conductor with 1 common
+ 1 individual wire per sub station on wire run.
Separate 2 conductor from RY-PA to external device.
Shielded cable is recommended. Use Aiphone #822202 (22AWG)
or #821802 (18AWG) wire (2 cond.).
Wiring Distance: 420' with 22AWG; 1,000' with 18AWG.
For additional information about this system,
please refer to the standard NEM instructions.
To convert RY-PA to N/C
(normally closed) contact:
Move one yellow wire from
"NO" to "NC". (Internal
connection, soldering
required.)
To activate
door release,
press button
located above
TALK button.
AC Power
for Door
Releases
Common for each closure
/
